What diagnostic method is used to assess decreased blood flow in suspected testicular torsion?

Doppler ultrasound is the preferred diagnostic method for assessing decreased blood flow in suspected testicular torsion. This imaging technique utilizes high-frequency sound waves to create images of the testicles and evaluate blood flow within the vascular structures. In cases of testicular torsion, the blood supply to the affected testis is compromised, which can be identified through Doppler ultrasound by observing reduced or absent blood flow in the twisted spermatic cord and testicular artery.

The use of Doppler ultrasound is particularly advantageous because it is non-invasive, does not involve ionizing radiation, and provides real-time results. It allows clinicians to quickly confirm or rule out testicular torsion, which is a surgical emergency requiring immediate intervention to preserve testicular viability.

Other imaging modalities, such as X-ray imaging, MRI, and CT scan, are less effective in this scenario. X-rays primarily assess bone and are not useful for soft tissue evaluation like the testis. MRI has its advantages in certain conditions but is not typically used for acute situations like torsion due to longer acquisition times and limited availability. CT scans, while useful in various abdominal and pelvic assessments, expose patients to radiation and are not the first line for testicular conditions. Therefore, Doppler ultrasound is the most appropriate